Table 1.
Characteristics of the study population (n = 124) and overall survival
| Characteristics | No. of Patients (%) | No. of Deaths (%)* | P† | MST (95% CI, month) | P‡ |
|---|---|---|---|---|---|
| Age | 0.456 | 0.468 | |||
| ≤ 60 years | 55 (44.4) | 39 (70.9) | 21.0 (13.0-32.0) | ||
| > 60 years | 69 (56.6) | 53 (76.8) | 18.0 (13.0-26.0) | ||
| Gender | 0.175 | 0.046 | |||
| Female | 57 (46.0) | 39 (68.4) | 26.0 (17.0-38.0) | ||
| Male | 67 (54.0) | 53 (79.1) | 17.0 (12.0-22.0) | ||
| Smoke | 0.752 | 0.679 | |||
| Ever | 114 (91.9) | 85 (74.6) | 20.0 (16.0-26.0) | ||
| Never | 10 (8.1) | 7 (70.0) | 16.0 (11.0-18.0) | ||
| Pack -year | 0.542 | 0.861 | |||
| ≤ 40 | 60 (48.4) | 46 (75.0) | 19.0 (14.0-29.0) | ||
| > 40 | 64 (51.6) | 46 (73.0) | 20.0 (13.0-29.0) | ||
| Histology | 0.828 | 0.632 | |||
| Adenocarcinoma | 40 (32.3) | 31 (77.5) | 20.0 (17.0-31.0) | ||
| Squamous cell | 38 (31.6) | 28 (73.7) | 16.0 (12.0-25.0) | ||
| Others | 46 (37.1) | 33 (71.7) | 24.0 (13.0-36.0) | ||
| KPS | 0.175 | 0.067 | |||
| 90-100 | 38 (30.7) | 24 (66.2) | 22.0 (16.0-39.0) | ||
| 80 | 67 (54.0) | 53 (79.1) | 20.0 (14.0-27.0) | ||
| < 80 | 19 (15.3) | 15 (79.0) | 13.0 (8.0-29.0) | ||
| Stage | 0.057 | 0.088 | |||
| IIIa | 52 (41.9) | 34 (65.4) | 20.0 (16.0-39.0) | ||
| IIIb | 72 (58.1) | 58 (80.6) | 17.0 (13.0-23.0) | ||
| Chemotherapy | 0.186 | 0.766 | |||
| Yes | 112 (90.3) | 85 (75.9) | 20.0 (16.0-26.0) | ||
| No | 12 (9.7) | 7 (58.3) | 17.0 (11.0-44.0) | ||
| Radiotherapy dose | 0.360 | 0.857 | |||
| < 70Gy | 59 (47.6) | 46 (78.0) | 21.0 (16.0-33.0) | ||
| ≥ 70Gy | 65 (52.4) | 46 (70.8) | 17.0 (12.0-24.0) |
Abbreviations: MST, median survival time.
* Percentage of deaths in each stratum.
† Chi -square test for difference in the distribution of deaths.
‡ Log-rank test for survival time in the univariate analysis.